:root {
    --fb-primary: #6366f1;
    --fb-secondary: #a855f7;
    --fb-bg: #0f172a;
    --fb-card: rgba(30, 41, 59, 0.8);
    --fb-text: #f8fafc;
    --fb-text-dim: #94a3b8;
    --fb-border: rgba(255, 255, 255, 0.1);
}

.flipbook-wrapper {
    background-color: var(--fb-bg);
    color: var(--fb-text);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    margin: 2rem 0;
    font-family: 'Outfit', sans-serif;
    background-image: radial-gradient(circle at top right, rgba(99, 102, 241, 0.1), transparent);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.flipbook-header {
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--fb-border);
    backdrop-filter: blur(12px);
    z-index: 20;
}

.flipbook-logo { font-weight: 700; font-size: 1.2rem; letter-spacing: -0.5px; }
.flipbook-logo span {
    background: linear-gradient(135deg, var(--fb-primary), var(--fb-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.flipbook-controls { display: flex; align-items: center; gap: 1.5rem; }

.flipbook-select {
    background: var(--fb-card);
    color: var(--fb-text);
    border: 1px solid var(--fb-border);
    padding: 0.6rem 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.flipbook-select:hover { border-color: var(--fb-primary); }

.fb-nav-group {
    display: flex; align-items: center; gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem; border-radius: 30px; border: 1px solid var(--fb-border);
}

.flipbook-btn {
    background: transparent; border: none; color: var(--fb-text);
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.flipbook-btn:hover { background: rgba(99, 102, 241, 0.2); color: var(--fb-primary); }

.flipbook-page-info { font-size: 0.85rem; color: var(--fb-text-dim); min-width: 80px; text-align: center; }
.fb-current { color: var(--fb-primary); font-weight: 600; }

.flipbook-viewport {
    padding: 3rem 2rem; display: flex; justify-content: center;
    align-items: center; min-height: 500px; position: relative;
}

.flipbook-element { opacity: 0; transition: opacity 0.8s ease; }
.flipbook-element.ready { opacity: 1; }

.flipbook-loader {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    justify-content: center; align-items: center; background: var(--fb-bg);
    z-index: 50; transition: opacity 0.5s ease;
}

.fb-spinner {
    width: 48px; height: 48px;
    border: 3px solid rgba(99, 102, 241, 0.1); border-top-color: var(--fb-primary);
    border-radius: 50%; animation: fb-spin 1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    margin-bottom: 1.5rem;
}

@keyframes fb-spin { to { transform: rotate(360deg); } }

.my-page { background-color: white; box-shadow: 0 0 20px rgba(0,0,0,0.2); overflow: hidden; }
.hidden { display: none !important; }

@media (max-width: 768px) {
    .flipbook-header { flex-direction: column; gap: 1rem; padding: 1rem; }
    .flipbook-controls { width: 100%; justify-content: space-between; flex-wrap: wrap; }
    .flipbook-viewport { padding: 1.5rem 1rem; }
}

[type=button], [type=submit], button {
    border: 0px !important;
}